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What you do with your Christmas tree, holiday lights, and even wrapping paper can be the difference between a happy holiday and a house fire. Learn how to keep your loved ones and home safe.
Compete for cash prizes! Enter the contest that teaches kids and their families about energy, and the benefits of energy efficiency.
Track a package, find Post Offices, look up a ZIP code and many more tools.
More on U.S. Postal Service App >